Invalid lifting device



FIG. 1 is a side perspective view of an invalid lifting device showing our new design;

FIG. 2 is a perspective view thereof from the side opposite that shown in FIG. 1;

FIG. 3 is a front perspective view thereof;

FIG. 4 is a rear perspective view thereof;

FIG. 5 is a bottom perspective view thereof;

FIG. 6 is a top perspective view thereof;

FIG. 7 is a perspective view thereof from the rear and the side shown in FIG. 1; and,

FIG. 8 is a perspective view thereof from the front and the side shown in FIG. 2. 

The ornamental design for an invalid lifting device, as shown. 